Long but quick chemistry lab that I need confirmation on answers if possible?

OK so I have this lab that went pretty quick and smooth and I have an online assessment that I needed to put all my figures in. I am all complete but am having trouble with 3 problems that the assessment is saying is wrong and I am looking for someone to verify or explain what I am doing incorrect.

Here were the steps of the lab and my findings:

Determining the molecular weight of Acetone:

Step 1: Obtain a Dumas bulb from the Equipment menu.

Step 2: Record the volume of the bulb in liters (volume is marked on bulb). .056L

Step 3: Record the mass the empty bulb using an electronic balance. 50.g

Step 4: Place 20 ml of acetone into the bulb.

Step 5: Obtain a 600-ml beaker.

Step 6: Select Beaker and place about 500 ml of water into beaker or enough to cover neck of bulb.

Then Here was the question I needed to answer (which I am getting number 2,5 and 6 incorrect):

1)Weight of empty Dumas flask=50g
2)Weight of acetone=? I tried both 39.285 & .1062 and it says these are wrong
3)Weight of liquid vapor after condensing=.106
4)Moles of acetone vapor based on ideal gas law=.00183
5)Calculated molecular weight of acetone based on experiment. (Give in grams / mole).= I tried .072 and that's incorrect
6)%error from the theoretical molecular of acetone and the experimental value.=which to me seems like there is a 0% error